Heel-attaching and flap-laying machine



July 19, 1938. L, J. BAZZONI HEEL ATTACHING AND FLAP LAYING MACHINE Filed June 2, 1956 5 Sheets-Sheet l July 19, 1938. J. BAZZONI HEEL ATTACHING AND FLAP LAYING MAQHINE Filed June 2, 1936 5 Sheets-Sheet 2 Fig, 2.

July 19, 1938. L. J. BAZZONI HEEL ATTACHING AND FLAP LAYING MACHINE Filed June 2, 1936 5 Sheets-Sheet 3 July 19, 1938. L BAZZON] 2,123,926

HEEL ATTACHING AND FLAP LAYING MACHINE Filed June 2, 1936 5 Sheets-Sheet 4 ZZZ July 19, 1938. BAZZON] 2,123,926

HEEL ATTACHING AND FLAP LAYING MACHINE 368 AWE/W05;

Patented July 19, 1938 UNITED STATES HEEL-ATTACHING AND FLAP -LAYING MACHINE Lewis J. Bazzoni, Swampscott, Mass, assignor to United Shoe Machinery Corporation, Paterson, N. J., a corporation of New Jersey Application June 2, 1936, Serial No. 83,116

23 Claims.

A single station machine which may be advantageously used for attaching heels to shoes and applying covering flaps to the breasts of the attached heels of the shoes is disclosed in United States Letters Patent No. 2,076,537, granted April 13, 1937 on an application filed in my name. It is desirable that the work remain in the machine for a short period in order to insure that the heel seat of the shoe shall be permanently deformed under attaching pressure of the heel, and in order to insure that the adhesives used to attach theheel to the shoe and the covering flap to the breast of the heel shall have time to set before relieving the clamping pressure of the heel against the heel seat of the shoe and the clamping pressure of a deformable flap-applying pad against the heel. With the above considerations in view it will be clear that the production of a single station machine is somewhat limited.

It is an object of this invention to provide a machine by the use of which an operator may attach heels to shoes and apply covering flaps to the breasts of attached heels of shoes quicker and more eifectively than has heretofore been possible. The illustrated machine comprises a turret upon which are mounted six circumferentially spaced heel-attaching and flap-laying units. After interposing an adhesive between the: heel and the heel seat of the shoe, the operator positions the heel upon the heel seat and places the last upon which the shoe is mounted, against a rubber pad of a jack of one of the units. The jack is then raised by treadle-operated mechanism until the tread and rear faces, respectively, of the heel are forced with initial pressure against abutments which are initially positioned in accordance with the shape of the heel. A one-revolution clutch is then tripped to actuate mechanism which causes the jack to force the shoe against the heel in engagement with the abutments with heavy molding pressure whereby to attach the heel to the shoe. The jack of the unit is held against movement away from the abutments by a lock. The one-revolution clutch is then tripped a second time to actuate mechanism for indexing the turret and for causing a resilient pad of the unit to apply a covering flap to the breast of the heel and to remain in clamped relation with the heel breast. After the heelattaching and flap-applying unit has been indexed to a discharge station the flap-applying pad is permitted to move away from the heel, after which the operator releases the jack to permit the shoe to move away from the abutments. The cost of the heel-attaching and flap-laying operation is materially reduced when performed by the use of the above machine.

The invention will be better understood and appreciated from reading the following detailed description thereof in connection with the drawings, in which Fig. 1 is a side view of the illustrated heelattaching and flap-laying machine;

Fig. 2 is a plan view of the machine, portions of which have been broken away;

Fig. 3 is a front view of the machine, a considerable portion of the mechanism of which has been removed and the turret of which is shown in vertical section;

Figs. 4 and 5 are front and side views respectively of heel-gaging mechanism of the machine;

Figs. 6 and '7 are illustrative views showing the flap-applying mechanism during two stages of the operation of the machine; and

Fig. 8 is an enlarged plan view of a pair of cams, one of which operates the flap-applying mechanism and the other of which releases the flap-applying pad from its clamped relation with the covered breast of the heel.

The machine is illustrated with reference to attaching a Louis heel (Figs. 6 and '7) to a shoe 22 mounted upon a last 23 and applying a covering flap 24 (Fig. 6) to the breast of the heel. The machine comprises six heel-attaching and flap-laying units 26 (Figs. 1 and '7) which are mounted upon and carried by a turret 28. The turret 28 is automatically indexed through mechanism which will be later described, whereby to move the heel-attaching and the flap-laying units 26 successively past a loading station 30 (Figs. 1 and 2) in front of which the operator stands.

The heel-attaching and flap-laying units 26 are identical and it will therefore be necessary to describe only one of the units in detail. Each of the units comprises a jack 32 (Figs. 1 and 7) mounted for movement in a vertical guideway 34 of a bracket 36 fastened to a post 38 which is secured by screws 40 to a boss 42 of the turret 28. The jack 32 is raised to force the shoe 22 and the heel 20 positioned upon the shoe, in clamped relation, the heel being moved into engagement with tread and rear abutments 44, 46, respectively, through the provision of an elevating rod 48 (Figs. 1 and 3) which is mounted for vertical movement in a projection 50 of the frame of the machine and is shaped and arranged to engage the lower end of the jack 32. It is desirable that the shoe be forced against the abutments 44, 46 with initial pressure, which may be relieved at the will of the operator, in order to permit the shoe to be properly positioned in the machine. Accordingly, the elevating rod 48 is provided with a flange 52 (Fig. 1) engaged by a rod 54 which is mounted for sliding movement in the machine frame and may be conveniently raised by depressing a treadle 56.

Since each of the heel-attaching and flap-laying units 26 is indexed with the turret 28 it is desirable that the jack 32, which is raised to cause the heel 22 positioned upon the shoe 24 to be forced against the abutments 44, 46 with clamping pressure, shall remain in its elevated position until released by the operator. Accordingly, a face 58 (Figs. 1 and '7) of the jack 32 is disposed at approximately 7 to the path of movement of the jack and is engaged by a cam 60 secured to a pin 62 which is pivotally mounted upon the bracket 36. The operative face 64 (Fig. '7) of the cam 60 has the general form of a logarithmic spiral, the arrangement bein such that different portions of the face 64 and the face 58 of the jack 32 are in engagement for different heightwise positions of the jack. The cam 60 is normally forced against the face 58 of the jack 32 through the provision of a coil spring 66 (Fig. 1) one end of which engages the bracket 36 and the other end of which is secured to a handle 68. The handle 68 which is secured to the pin 62, is depressed against the action of the spring 66 by the operator preparatory to removing the shoe which has been operated upon, from the machine. With the above arrangement the cam 60 and the face 58 of the jack 32 together operate somewhat as a toggle, the jack being prevented from sliding downwardly from its elevated position after the work has been clamped in the machine and until the operator depresses the handle 68. When the cam 60 is swung in a clockwise direction (Fig. 7) by pressing the handle 68 down.- wardly, the jack 32 normally drops under its own weight until a flange thereof engages the bracket 36.

When the operator has depressed the treadle 56 to force the heel positioned upon the shoe against the tread and back abutments 44, 46, respectively, and has ascertained that the shoe has been properly positioned in the machine, he pushes a hand lever I0 (Figs. 1 and 2) rearwardly, thereby tripping a one-revolution clutch I2 (Fig. 1) and thus causing, through mechanism which will now be described, the shoe and the heel to be clamped together with final pressure.

Secured to a drive shaft 14 (Figs. 1 and 3) is a worm I6 which is in meshing engagement with a large gear 18 keyed to a shaft rotatably mounted in the frame of the machine. A small gear 82 is fixed to the rear end of the shaft 80 and is in meshing engagement with a large gear 84 keyed to a shaft 86 rotatably supported in a bearing 88 of the machine frame. Formed in tegral with the gear 84 are a pair of cams 90, 92, the cam being engaged by a roll 94 rotatably mounted at one end of a lever 96 secured to one end of a shaft 98 swiveled on a pedestal I00 bolted to the main frame. Secured to the other end of the shaft 98 is a lever IOI the forward end of which is bifurcated and is hinged through links I02 to a block I04 (Fig. 3) which is bored to receive a rod I 06, a nut I 0! being in threaded relation with the lower end of the rod. A housing I08 is in threaded engagement with the upper end of the rod I06 and may be adjusted relatively thereto through the provision of a nut I I0. The housing I08 is provided with a guideway (not shown) constructed and arranged to receive the lower end of the elevating rod 48. The housing I08 and the rod I06 are normally held in raised positions with relation to the block I04 (Fig. 3) by a spring II2 the lower end of which engages the block and the upper end of which forces a washer I I4 against a nut I I6 which is in threaded engagement with the rod.

In order to impart upward movement to the elevating rod 48 through the housing I 08, the elevating rod has a serrated face I I8 which, when the housing is raised, is engaged by a pawl I20 pivotally secured to the housing. The pawl I20 is swung into engagement with the serrated face I I8 of the elevating rod 48 by a spring I22 which is mounted upon a rod I24, the upper and lower ends, respectively, of the spring I22 engaging an arm I26 secured to the pawl I20 and a collar I28 secured to the rod. The rod I24 is initially secured in adjusted position with relation to a boss I30 of the main frame by a screw I32, the lower end of the rod passing through an enlarged opening (not shown) formed in the arm I28.

As above stated, the heel of the shoe positioned upon the jack 32 is forced with initial pressure against the abutments 44, 46 by depressing the treadle 56, after which the handle 10 is pushed rearwardly, thereby causing the shoe through the above-described mechanism to be forced against the heel in engagement with the abutments with final clamping pressure. The spring II2 may be changed in accordance with the amount of heelattaching pressure desired.

The treadle-operated rod 54 is normally urged into a lowered position by a lever I34 (Figs."1 and 3) the rear end of which is secured to a pin I36 pivotally mounted upon an extension I38 of the pedestal I00, the forward end of the lever engaging a collar I40 (Fig. 1) adjustably secured to the rod 54. A spring I42 has its upper end secured to the lever I34 and its lower end secured to the frame of the machine and serves normally to urge the rod 54 into a lowered position. After the jack 32 has been forced upwardly with final pressure the lever IOI is moved in a clockwise direction (Fig. 1), the block I04 (Fig. 3) engaging the nut I0'I carried by the lower end of the rod I06 to cause the housing I 08 to move downwardly. As the housing I08 is lowered, the elevating rod 48, the lower end of which is slidingly mounted in the housing, is moved to a lowered position under the action of a spring I44 the lower end of which is secured to the treadle-operating rod 54 and the upper end of which is secured to the elevating rod 48.

It is important that the operator shall be prevented from accidentally raising the elevating rod 48 by stepping upon the treadle 58 during the indexing of the turret 28, thereby insuring that the elevating rod 48 shall not be engaged by one of the jacks as it swings toward the loading station. Accordingly, an arm I46 (Figs. 1 and 3) which is secured to the right-hand end of shaft I36 to which the lever I34 is secured, carries a roll I48 which, while the turret 28 is being indexed, is in engagement with the cam 92. Should the operator accidentally step upon the treadle 56 while the turret 28 is being indexed, pressure of the lever I36 against the collar I40 prevents upward movement of the rod 54 and thus prevents the elevating rod 48 from being raised into the path of rotation of one of the jacks 32 of the turret.

The mechanism for indexing the turret 28 will now be described. An indexingarm I50 (Figs. 1

and 3) is secured to the rear end of the shaft 86 and is constructed and arranged successively to engage within radial guideways I52 of a Geneva cam I54 which is rotatably mounted upon a shaft I56 supported by the main frame. A portion of the rotation of the arm I50 causes the Geneva cam I54 to rotate through one-sixth of a revolution. The Geneva cam I54 is in meshing engagement with a pinion I58 (Fig. 3) mounted upon the lower end of a vertical shaft I60 which is rotatably mounted in the main frame and has secured to its upper end a pinion I62 which meshes with a circular rack I64 of the turret 28. The circular rack I64 is secured to the turret 28 through the provision of a screw I66 and a studand-screw connection I68. The gearing ratio of the mechanism is such that for every one-sixth of a revolution of the Geneva cam I54 the turret rotates one-sixth of a revolution successively to move the heel-attaching and flap-laying units to the loading station 30.

In order to insure against rotation of the turret 28 after it has been indexed to the loading station 30, there is provided an arm I10 (Fig. l) which is pivotally mounted upon a pin I12 supported by the machine frame and is normally urged in a clockwise direction by a spring I14 arranged to force a roll I16 carried by the arm I10 into engagement with the Geneva cam I54. When the arm I50 which rotates in a clockwise direction (Fig. 1) leaves one of the guideways I52 the roll I16 carried by the arm I10, under the action of the spring I14, enters another guideway and prevents the Geneva cam I54 from being rotated. As the indexing arm I50 enters one of the guideways I52 a lug I18 carried by the indexing arm engages an extension I of the arm I10, whereby the roll I16 is withdrawn from the guideway in which it is registered and the Geneva cam I54 is permitted to be indexed by the continued rotation of the arm I50.

The turret 28 comprises a hollow depending stem I82 (Fig. 3) the lower portion of which fits upon a bearing shaft I84, a boss I86 of the turret 28 being in threaded relation with the upper end of the shaft I84. The shaft I84 is locked with relation to the turret 28 through the provi sion of a nut I81. The enlarged lower end I88 of the shaft I84 fits within a cylindrical recess of the machine frame, roller bearings I90 being interposed between the machine frame and a flange I92 of the bearing shaft I84 in order rotatably to support the turret 28. It is desirable that the turret 28 shall turn freely but not too freely, and in order that there may be a slight drag on the turret controllable at the will of the operator, one or more friction blocks I94 are provided. The friction blocks I94 engage a flange I96 of the turret and are secured to the frame of the machine by bolt and nut connections I98.

It is highly desirable that the abutments 44, 46 be accurately positioned with relation to the path of movement of a flap-applying pad 260 (Figs. 4 and 5) in order that the pad shall effectively apply the covering flap 24 (Fig. 6) to the rear end of the shank of the shoe and to the breast of the heel progressively toward the tread end of the heel. The mechanism for applying the flap 24 to the heel will later be described in detail. The abutments 44, 46 are initially adjusted for different styles and heights of heels. In order to adjust the abutments 44, 46 in accordance with the shape of the heel of the shoe to be operated upon, the heel is placed upon a table 202 (Figs. 4 and 5) of a heel gage 204 which comprises a post 206 the lower square end of which is inserted within a correspondingly shaped recess of the bracket 36, the heel being placed attaching-face downwardly upon the table 202. the table 202 by a bar 208 which is pivotally mounted upon a pin 2I0 carried by a projection 2 I2 of the gage'and is shaped to engage the forward end of the projecting lip of the heel. A V -shapedgage 2I4 which is constructed and arranged to engage the rear end of the heel is mounted for sliding movement over the table 202 and is-normally urged toward the bar 208 by a spring 2I6, one end of which engages a flange 2 I8 of a rod 220 secured to the V-shaped gage 2I4 and the other end of which spring engages the end of a recess through which the rod 220 passes. The bar 208 may be swung about the pin 2I0 by turning a screw 222 which is in threaded vengagement with the table 202 and is surrounded by a spring 224 which forces the bar 268 into en-- gagement with the head of the screw 222 and which is housed within. a recess 226 through which the screw passes. In order to position'the heel in the machine the same is placed upon the table 202 of the heel gage, as illustrated in Figs. 4 and 5, the V-shaped gage 2I4 centralizing the heel and forcing the lip of the same against the bar 208.

In order initially to position the abutments 44, 46 the operator places the lower end of the post 266 in a correspondingly shaped recess of the bracket 36 and tightens a set screw 228 which rigidly secures the post to the turret 28.. After the heel has been placed upon the table 202 the pad 280 is lowered and the screw 222 is turned until the pad comes down against the central part of the end of the lip portion of the heel.

The tread abutment 44 (Fig. 4) comprises a swiveled block 230 and a carrier 232 therefor adjustable in directions indicated by reference numeral 234 with relation to a slide 236 upon turning a screw 238 which is rotatably mounted in the carrier and is in threaded relation with the slide. The rear abutment 46 comprises a block 240 which is pivoted to an angular lug 242, and a piece of heavy leather 244 secured by a screw 246 to a slide 248, the leather being interposed between the heel and the block. Opposing faces of the lug 242 and the slide 248 are serrated, the lug being adjustable with relation to the slide in directions indicated by reference numeral 250 through a screw-and-slot connection 252. The block 240 slides upon the leather cover 244 which remains stationary with relation to the heel during the heel-attaching operation, thereby insuring that the cover of the heel is not scarred.

The slides 236, 248. are mounted for movement in guideways, respectively, of a housing 254. The slides 236, 248 are provided with racks 256. 258, respectively, which are in meshing engagement with a pinion 260 (Fig. 4) rotatably mounted in the housing 254. Upward movement of one of the abutments 44, 46 causes equal and opposite downward movement of the other abutment, thereby providing an equalizing pressure between the abutments. The housing 254 is provided with rearwardly extending flanges 262 (Figs. 1 and 5) constructed and arranged to receive a guide bar 264 which is rigidly secured to a bracket 266 clamped to the post 38. Rotatably supported in the bracket 266 is a screw 268 which is in threaded engagement with the housing 254, the housing being raised and lowered byturning a,

The heel is positioned lengthwise upon hand wheel 210 which is rotatably mounted in the bracket and is secured to the screw.

In order initially to position the abutments 44, 46 after the heel has been properly positioned upon the heel gage as above described and the abutments have been properly adjusted in directions 234 and 250 (Fig. 4), respectively, so that they effectively engage the tread and rear faces of a heel of a predetermined shape, the hand wheel 210 is turned until the abutments'are effectively forced against the heel. Heels of the same style are commonly of the same height regardless of the length of the shoe and under such circumstances the above adjustment need be effected only when changing from one style of shoe to another. After adjusting the abutments 44. 46 the operator notes the position of a pointer 212 secured to the bracket 266, along a scale 2'14 carried by the housing 254 and also notes the position of an arrow 2'16 (Fig. 4) on the slide 236 with reference to a scale 2'18 upon the carrier 232. It is therefore possible to reset the abutments 44, 46 without actually measuring the heel as above described after the machine has once been set up for a particular style of heel. The block 246 of the rear abutment 46 need only be adjusted relatively to the lug 242 when changing from Louis to Cuban heels.

In order to cooperate with the abutments 44, 46 for the purpose of locating the shoe in a predetermined position in the machine there is provided a sole gage 280 constructed and arranged to engage the forepart of the sole of the shoe in the vicinity of the break line of the shoe. The gage 280 is formed integral with a band 282 which is secured to the post 38, the gage being initially adjusted heightwise of the machine. The break line of the forepart of the sole of the shoe is practically the same for different lengths of shoes having a heel of a uniform height and it is therefore desirable that the gage engage only portions of the sole located in the vicinity of the break line thereon, as illustrated. V

In order that while initially positioning the gage 280 the same may be forced against the sole of the shoe without tilting the shoe clamped between the jack 32 and the abutments 44 and 46, it is desirable that the abutments be temporarily fixed with relation to each other. It

will be noted that if the abutments 44, 46 were relatively movable during the setting-up operation, any substantial downward pressure against the forepart of the shoe by the gage 280 would cause'the abutments to move from their adjusted positions. Accordingly, there is provided a screw 284 which is in threaded relation with the housing 254 and which is forced against the slide 236, thereby preventing any movement of the slides ,236, 248 when the gage 280 is being adjusted.

The operator may readily determine the heightwise position of the forepart gage 280 by the provision of an indicator 286 (Fig. 1) secured to the band 282 and arranged to slide over a scale 288 which is secured to the post 38. Although the abutments 44, 46 have been described as being movable with relation to each other it will be noted that the same may be fixed with relation to each other as above described and form in effect a single abutment. Such a combined abutment may be referred to in the singular.

It has been found that the heel seat of the shoe occasionally yields substantially after the elevating rod 48 has been lowered away from the jack It is therefore desirable that there shall be a slight follow-up pressure of the shoe against the heel so that the shoe shall be effectively forced against the heel even though the shoe materials yield after the application of the final clamping pressure above noted. Accordingly, the jack 32 comprises a rubber block 290 (Figs. 1 and 5) which is positioned in a head 292 of the jack 32, the block being compressed during the heel-attaching operation. The head 292 of the jack 32 is secured by a screw 294 to the shank portion of the jack which is engaged by the elevating rod 48.

As above stated, the operator forces the shoe with preliminary pressure against the heel by depressing the treadle 56 and after the shoe has been positioned in the machine, pushes the handle 13 rearwardly to cause the shoe to be forced with final clamping pressure against the heel through the above-described power-operated mechanism. In order to index the turret 28 through one-sixth of a revolution the operator again pushes the handle 10 rearwardly to trip the one-revolution clutch 72. While the shoe positioned and clamped in the machine moves from the loading station 33 (Figs. 1 and 5) to the next indexed position, the heel-breast covering flag 24 (Fig. 6) is applied to the breast of the Louis heel 20 by the pad 200.

The mechanism for applying the covering flap 24 to the breast of the heel will now be described. A carrier 296 is rotatably mounted upon a shaft 298 which is pivoted in recesses of a pair of bosses 339 of the turret 23. A. lever 332 comprising several arms is secured to the shaft 298 by a screw 304 between the bosses 305 of the carrier 296, and a lever 335 is secured to the inner end of the shaft 238 by a screw 308.

Pivotally secured by screws 310 to the leading end of the carrier 296 is a pad holder 312 which is bifurcated to receive the pad 230 and is provided with a reces for receiving a shank 314 (Fig. 2) of a metal reenforcement of the pad. The pad 260 is retained in the holder 312 by a plunger 316 which is normally urged into engagement with a notch 318 of the shank 314 of the metal reenforcement of the pad by a leaf spring 320. When the pad 26!] is positioned in the holder 312 its leading portion 322 (Fig. 1) which first contacts the Work is substantially in alinement with the axes of the screws 310. The reason. for such an arrangement will be explained later.

One arm of the lever 302 is hinged to a tube 324 (Figs. 6 and 7) constructed and arranged telescopically to receive a rod 326 which is hinged to the upper end of the pad holder 312. Surrounding the tube 324 and the rod 326 is a spring 328 the respective ends of which engage a flange 333 of the tube and a. nut 332 secured tothe rod. In order that the tube 324 and the rod 326 shall be held in alinement the rod carries a pin 334 which engages within a slot 336 of the tube.

Pivotally secured to a bifurcated portion of the lever 332 is a stirrup 338 comprising a block 340 provided with an opening 342 (Fig. 7) through which extends a rod 344. An enlarged threaded portion 343 of the rod 344 is in threaded engagement with a trunnioned block 348 mounted in a rearward extension of the carrier 296. A spring 353 surrounds the rod 344 and has its upper and lower ends, respectively, in engagement with the enlarged threaded portion 346 of the rod. and the block 343.

A link 352, which is pivotally connected to the rear end of the arm 306, has its lower end hinged to an arm 354, the forward end. of which is rotatably mounted upon a screw 358 secured to the machine frame. A cam roll 358 which is carried by the arm 354 is constructed and arranged to engage a cam 360 (Fig. l) fixed to the machine frame as the turret is indexed, thereby actuating the above-described mechanism to cause the pad 200 to apply the covering flap to the breast of the heel.

Each of the carriers 2% is normally held in a raised position. through the provision of a spring 362 the forward and rear ends of which are secured to the carrier and to the machine frame, respectively. In order to limit movement of the carrier 296 in a clockwise direction (Figs. 6 and '7) when the unit is operated without any shoe positioned therein, there is provided a bar 364 which has a slot 303 (Fig. 1) shaped to receive a screw 368 secured to the boss. 42 and which has its forward end hinged to the carrier. A handle: 310 is secured to each of the carriers 296 in order to assist the operator in. moving the pad 200 into engagement with the heel when initially positioning the abutments 44, 4%.

As above stated, after the shoe has been forced upwardly against the heel in engagement with the abutments 44, 46 with final attaching pressure and the elevating rod 48 has moved into a lowered position, the operator again pushes the the lever 302 in a clockwise direction through the above-described mechanism. As the stirrup 338 which is. pivoted to the bifurcated portion of the lever 302 is raised it rotates the carrier 206 with it through the spring-and-rod connection above described. When the carrier 2% and the lever 302 have been swung as a unit about the axis of the shaft 298 through an arc sufiicient to cause the pad to force the flap against the rear end of the shank of the shoe, continued rotation of the lever 302 in a clockwise direction (Fig. 7) with relation to the carrier causes the pad 200 to be rotated in a clockwise direction (Fig. '7) about the screws 310 with relation to the carrier which swings slightly toward the shoe as. the pad is compressed against the shoe. The pad 200 is so shaped and mounted that it applies the flap to the shank of the sole of the shoe and to the breast of the heel starting at the point of initial contact of the pad with the shoe,

. which is located .at the base of the flap, and

progressing toward the tread end of the heel. By mounting the pad 200 for rotation about the axis of the screws 3l0, which axis is substantially in alinement with the leading portion 322 I of the pad, the flap is applied to the major portion of the breast of the heel by the rolling action of the pad. The application of excessive pressure against the shoe by the pad 200 is prevented by providing the yielding connections between the lever 302 and the carrier 296 and by providing the spring 320 and the telescopic connections such as above described between the lever 302 and the pad holder 312. The carrier 296 may be described .as floating since it is yieldingly connected to various members of the flapapplying unit.

It is desirable that the pad 200 be held in compressed relation with the flap 24 after it has applied the flap .to the heel and accordingly there is provided a latch 312 which is pivoted upon a shaft 314 carried by a depending boss 316 of the turret 28. A spring 318 surrounding a rod 300 which is pivoted to the leading portion of the latch 312 and the upper portion of which extends through an opening in the turret 28 forces the trailing end of the latch behind a shoulder 332 of the lever 302, the flap-applying mechanism being held in the position illustrated in Fig. 7 by the latch 312 until the turret approaches a discharge station 384 (Fig. 2). As the turret 23 approaches the dis- (Figs. 6 and 7) against the action of the spring 318 by the above-described mechanism the carrier 206 is permitted to swing away from the shoe under the action of the spring 382,'the springs 328 and 350 expanding and causing the various members of the flap-applying mechanism to return to their original positions illustrated in Fig. l.

It is preferable to have one operator remove the shoe from the machine and trimthe laterally projecting margins of the flap 24 while another operator, after clamping the shoe in the machine and interposing cement or other adhesive between the flap and the breast of the heel, indexes the machine. Accordingly, the cam 386 which trips the lever 308 to permit the pad to swing away from the shoe, may be slid through an arc of approximately sixty degrees. It will thus be clear that when there are two operators on the machine the earn 386 is so positioned that the carrier 295 is moved away from the heel between flange 396 (Fig. 8) which is slidingly mounted.

upon a horizontal flange 39B of the cam 360. In threaded relation with the flange 398 area pair of screws 400which are shaped and arranged to engage within arcuate slots 402 of the flange 39B and which may be loosened preparatory to moving the cam 386 from one operating position to another.

In order rigidly to hold together the posts 38 of the turret 28 a header 404 is secured within the upper end of each of the posts, the headers being rigidly secured to a brace 406 through the provision of screws 400.

The flap-applying pads 200 may be changed from time to time in accordance with the shape of the heel and accordingly a plurality of pads are conveniently supported upon a rack 4 I 0 which is secured to the brace 406, openings 412 (Fig. 2) being provided to receive the shanks 314 of the metal reenforcements of the pads 200, respectively.

In order to perform the heel-covering and breast-flap-laying operation the operator, after interposing suitable adhesive between the at taching face of the heel and the heel seat of the shoe positions the heel upon the fitted heel seat and engages the cone of the last 23 with the rubber block 230 of the jack 32. The operator then steps upon the treadle 56 to force the heel against the abutments 44, 46, the shoe being accurately located before too much pressure has been exerted against the treadle. When the shoe has been positioned the handle 10 is pushed rearwardly to trip .the one-revolution clutch 12 thereby causing theelevating rod 48 to raise the jack under power in order to move the shoe and the heel upwardly with final attaching pressure against the abutments 44, 46. When the shoe has been properly clamped in the machine and adhesive has been interposedibetween'the flap and the breast of the heel, the handle 10 is again pushed rearwardly to .trip the clutch 12 thereby indexing the machine and automatically applying the flap 24 to the breast of the heel as above described.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In a machine for operating upon shoes, a jack for a shoe, an abutment, means for moving the jack in a predetermined path to force the shoe against said abutment, said jack comprising a face which is inclined to said path of movement, and a cam provided with a spiral face constructed and arranged to engage said face of the jack and to prevent movement of the jack away from said abutment but to permit movement of the jack toward said abutment.

2. In a machine for operating upon shoes, an

' abutment, a jack for a shoe movable in a predetermined path with relation to said abutment, said jack comprising a face which is inclined at a slight angle to said pathlof movement, and a pivotally mounted cam having a face which has the general form of a logarithmic spiral arranged to engage said face of the jack.

3. In a machine for operating upon shoes, a jack for ashoe, anabutment, means for moving the jack in a predetermined path to force the shoe against the abutment, said jack comprising a face which is inclined to said path of movement, a cam provided with a spiral face constructed and arranged to engage said face of the jackand to prevent movement vof the jack away from said abutment but to permit movement of the jack toward said abutment, a spring for normally forcing the cam against said face of the jack, and a handle connected to the cam for swinging the same away from the jack to permit the jackto move away from the abutment.

4. In a covering machine, a carrier mounted for movement about an axis, a pad pivotally mounted upon the carrier, a lever mounted for pivotal movement about said axis, a cam, mechanism for operating the lever, a support for a shoe, yieldable connections between the'lever and the pad on the one hand and between'the carrier and the lever on the other hand, and means for effecting relative movement of said mechanism and said cam to cause the pad toapply a covering flap to the breast of the heel of the shoe.

.5. In a covering machine, a turret, a carrier pivotally secured to the turret, a pad pivotally secured to the carrier, a shoe support mounted upon the turret, mechanism comprising a member pivotally secured to the turret, a cam constructed and arranged to be engaged by said mechanism, yieldable connections between the member and the carrier, yieldable connections between the member and "the pad, and means for rotating the turret to cause the ca-m to be engaged by said mechanism whereby to move the pad as a unit against a portion of the shoe and then to swing the pad with relation to the carrier against other portions of the shoe after the pad has engaged the shoe.

6. In a covering machine, means for clamping a shoe, a carrier movable in a predetermined path with relation to the shoe, and a pad movable with the carrier in said path for applying the base portion of a heel-breast covering flap to the shoe, said pad being mounted for pivotal movement with relation to the carrier about an axis which extends substantially along the leading portion of the pad whereby to apply other portions of the flap to the shoe.

7. In a covering machine, a support for a shoe, a carrier mounted for translatory movement, and a pad movable with said carrier to apply a covering flap to a portion of the shoe, said pad also ing flap to the shoe, said pad being mounted for pivotal movement with relation to the carrier about an axis which is substantially parallel to the first-named axis and passes substantially through the leading portion of the pad whereby to apply other portions of the flap to the shoe.

9. In a machine for applying covering flaps to the breasts of heels of shoes, means for clamping a shoe, a carrier mounted for pivotal movement aboutan axis, a pad mounted for movement with the carrier and also mounted for pivotal movement with relation to the carrier, an operating lever mounted for pivotal movement about said axis, yieldable connections between the leverand the pad, and mechanism constructed and arranged first to swing the carrier and the pad about said axis for moving the pad into engagement with the shoe and then to swing the lever with relation to the carrier whereby to swing the pad with relation to the carrier.

10. In a machine for applying covering flaps to the breasts of heels of shoes, a turret, a plurality of shoe-positioning and clamping units mounted upon the turret, a plurality of pads each of which is mounted for movement about two spaced axes and is constructed and arranged to apply a covering flap to the breast of a heel of a shoe mounted in a corresponding shoe-positioning and clamping unit, a stationary cam, and mechanism operatively connected to each of the pads constructed and arranged to be actuated by said cam upon movement of the turret whereby to apply the flap to the breast of said heel.

11. In a flap-applying machine, a support for a shoe, a carrier mounted for swinging movement and having a pair of spaced arms, a flap-applying pad, a holder pivotally secured to the carrier and having a bifurcated portion which is positioned between the arms and is shaped to receive the pad, means for interchangeably securing pads of different shapes to the holder, means for swinging the carrier relatively to the support, and means for swinging the holder relatively to the support and to the carrier.

12. In a flap-applying machine, a turret, means for positioning and clamping a shoe upon the turret, a cam, and a pad movable with the turret and also movable about two axes with relation to said means under the action of said cam as the turret is rotated whereby to apply a heel-breast covering flap to the breast of the heel.

13. In a flap-applying machine, a turret, a stationary cam, means for positioning and clamping upon the turret a shoe the sole of which has a breast flap split therefrom, a carrier pivotally mounted upon the turret, a pad pivotally mounted upon the carrier, and mechanism which is operatively connected to the carrier and to the pad constructed and arranged to engage the cam as the turret is indexed whereby to swing the pad to apply the base portion of the flap to the pro- J'ecting portion of the breast of a Louis heel attached to the shoe and then to swing the pad with relation to the carrier to apply other portionsof the flap to the remaining portion of the heel breast.

14. In a flap-applying machine, a member, a plurality of supports for shoes respectively mounted upon said member, a plurality of flap-applying units mounted upon the member adjacent to the respective supports, a cam, and means for effect-- ing relative movement of the member and the cam, said units being constructed and arranged successively to apply flaps to the breasts of the heels upon the supports upon relative movement of said member and said cam.

15. In a flap-applying machine, a turret, means for indexing the turret, means for positioning and clamping a shoe upon the turret, a cam, a pad movable with the turret, means actuated by the cam When the turret is indexed to cause the pad to apply a covering flap to the breast of the heel of the shoe and then to lock the pad in forced relation with the applied flap, and mechanism for releasing the pad from engagement with the shoe when the shoe has been indexed to a predetermined position preparatory to removing the shoe from the machine.

16. In a flap-applying machine, a turret, means for indexing the turret, means for positioning and clamping a shoe upon the turret, a earn, a carrier pivotally mounted upon the turret, a pad pivotally mounted upon the carrier, mechanism constructed and arranged to be actuated by the cam when the turret is indexed, yieldable means operatively connecting said mechanism and said carrier on the one hand and said mechanism and said pad on the other hand, and means for indexing the turret to cause said mechanism to engage the cam whereby to swing the carrier and the pad with relation to the shoe-positioning and clamping means without swinging the pad with relation to the carrier until the pad engages the shoe, and then to swing the pad with relation to the carrier as the pad is forced against the shoe.

17. In a flap-applying machine, a turret, means for positioning and clamping a shoe upon the turret, a cam, a carrier pivotally mounted upon the turret, a pad mounted upon the carrier, mechanism constructed and arranged to be actuated by the cam when the turret is rotated, yieldable means connecting said mechanism and said carrier on the one hand and said mechanism and said pad on the other hand, means for indexing the turret to cause said mechanism to engage the cam whereby to swing the carrier and the pad with relation to the shoe-positioning and clamping means until the pad engages the shoe and then to swing the pad with relation to the carrier as the pad is forced against the shoe whereby to apply a flap to the breast of the heel progressively toward the tread end of the heel, mechanism for locking the pad against the breast of the heel after it has applied the flap to the same,

and means for tripping said last-named mechanism when the shoe upon the turret has been indexed to a predetermined position preparatory to removing the shoe from the machine. I

18. In a flap-applying machine, a turret, means for positioning and clamping a shoe upon the turret, a cam, a carrier pivotally mounted upon the turret, a pad pivotally mounted upon the carrier, mechanism constructed and arranged to be actuated by the cam when the turret is indexed, yieldable means connecting said mechanism and said carrier on the one hand and said mechanism and said pad on the other hand, means for indexing the turret to cause said mechanism to engage the cam whereby to swing the carrier and the pad with relation to the shoe-positioning and clamping means to move the pad into engagement with the shoe and then to swing the pad relatively to the carrier as the pad is forced against the shoe in order to apply the flap to the breast of the heel of the shoe progressively toward the tread end of the heel, mechanism for locking the pad against the breast of the heel after it has applied the flap to the same, and means for tripping said last-named mechanism when the shoe upon the turret has been indexed to a predetermined position preparatory to removing the shoe from the machine, said last-named means being adjustable with relation to the turret to vary the position at which said last-named mechanism is tripped.

19. In a machine for operating upon shoes, a turret comprising a plurality of jacks and corresponding abutments, means for indexing the turret, an elevating rod, manually operated mechanism for actuating the elevating rod successively to force shoes mounted upon the respective jacks against corresponding abutments with initial pressure, locks carried by the turret for preventing retractive movement of the respective jacks away from the abutments, power-operated means for successively actuating the elevating rod to force said shoes with final pressure against corresponding abutments, means for causing the elevating rod to move to a predetermined position away from the turret after the shoes have been clamped with final pressure between the respective jacks and abutments, and a stop constructed and arranged to prevent the manually operative mechanism from raising the elevating rod during a predetermined portion of the cycle of operation of the machine whereby to insure that said rod shall not be engaged by one of the jacks during the indexing of the turret.

20. In a machine for operating upon shoes, a. turret comprising a plurality of jacks and corresponding abutments, power-operated means for indexing the turret, an elevating rod for successively raising the jacks which have been indexed to an operating station to force shoes mounted upon the respective jacks against corresponding abutments, said elevating rod having a serrated face, manually operated mechanism constructed and arranged positively to raise the jack at the operating station until the shoe is forced with initial pressure against the abutment, a lock for preventing retractive movement of the jack away from the abutment, a connecting member constructed and arranged to receive an end portion of the elevating rod, a pawl pivotally secured to the connecting member, means for normally retaining the pawl out of engagement with the serrated face of the elevating rod to permit the elevating rod to be raised without raising the connecting member, yieldable power-operated means for raising 'theconnecting member, means for causing the pawl to engage the serrated face of the elevating rod when the connecting member is raised thereby causing the connecting member and the elevating rod to be secured together to force the shoe against the abutment with final pressure, said power-operated means being constructed and arranged to lower the connecting member after the shoe has been finally clamped between the jack and the abutment whereby to permit the elevating rod to move to a lowered position, and safety mechanism operative in timed relation with the turret indexing mechanism for preventing said manually operated mechanism from accidentally moving the elevating rod into the path of movement .of one of the jacks during the indexing of the turret.

21. In a heel-attaching machine, a jack for supporting a shoe, equalizing abutments constructed and arranged to be engaged by the tread and rear faces respectively of a heel to be attached to the shoe, a gage constructed and arranged to engage the break line portion only of the sole of the shoe, and means for moving the jack toward the abutments to clamp the heel which is positioned upon the shoe and between the attaching face of which and the heel seat of the shoe adhesive has been interposed, to the shoe.

v22. In a flap-applying machine, a pair of abutments constructed and arranged to be engaged by the tread and rear faces of a heel, a flap-applying pad movable in a predetermined path, and means comprising a table for supporting the heel and positioning the same in the machine with relation to the path of movement of the pad preparatory to adjusting the abutments in accordance with the position of the machine, said means being constructed and arranged to be readily incorporated in the machine and removed therefrom.

23. In a flap-applying machine, a pair of abutments constructed and arranged to be engaged by the tread and rear faces of a heel, a housing, said abutments being geared together for equal and opposite movement in the housing whereby to equalize pressure against the heel, a flap-applying pad movable in a predetermined path, means comprising a table for supporting the heel and positioning the same in the machine with relation to the path of movement of the pad preparatory to adjusting the abutments in accordance with the position of the heel, a gage constructed and arranged to position a. shoe by engagement with the break line portion only of the sole of the shoe, and means for preventing relative movement of the abutments to facilitate the initial positioning of said gage.

LEWIS J. BAZZONI. 

